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Riverside County, California: environmental and disease records

Cancer mortality in Riverside County is 137.5 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Stomach deaths at 1.3 times the U.S. rate and Brain & nervous system deaths at 1.2 times the U.S. rate. Federal databases place 8,117 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (3,750), Small hazardous waste generator (1,895), Gas station (mapped facility) (483). 9 correctional facilities operate in the county, at least one with health-based drinking water violations on record. EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 30 in a million, driven mainly by formaldehyde.

Rates are age-adjusted per 100,000 people. A cancer signal is marked significant when the lower bound of its 95 percent confidence interval is above the U.S. rate. Facility counts use active federal records located inside the county boundary. Approximate county center: 33.7537, -116.0203.

How this county ranks in California

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Cancer deaths and new cases versus the United States

Source: NCI and CDC State Cancer Profiles, both sexes, all ages. Sorted by the ratio of the county rate to the U.S. rate.

Cancer rates for Riverside County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Stomach	Deaths	3.6	2.7	1.33xSignificant	3.3 to 3.9	2020-2024
Brain & nervous system	Deaths	5.3	4.4	1.2xSignificant	4.9 to 5.7	2020-2024
Thyroid	Deaths	0.6	0.5	1.2x	0.5 to 0.7	2020-2024
Liver & bile duct	Deaths	7.6	6.6	1.15xSignificant	7.2 to 8.1	2020-2024
Stomach	New cases	7.4	6.6	1.12xSignificant	7 to 7.9	2019-2023
Childhood cancer (under 15)	Deaths	2.1	1.9	1.11x	1.6 to 2.8	2020-2024
Bladder	Deaths	4.4	4.1	1.07x	4.1 to 4.8	2020-2024
Childhood cancer (under 15)	New cases	17.2	16.4	1.05x	15.5 to 18.9	2019-2023
Melanoma of the skin	New cases	24.9	23.8	1.05xSignificant	24.1 to 25.8	2019-2023
Liver & bile duct	New cases	8.9	8.7	1.02x	8.4 to 9.4	2019-2023
Kidney & renal pelvis	Deaths	3.4	3.4	1x	3.1 to 3.7	2020-2024
Melanoma of the skin	Deaths	2	2	1x	1.8 to 2.3	2020-2024
All cancer	Deaths	137.5	143.2	0.96x	135.6 to 139.4	2020-2024
Brain & nervous system	New cases	5.9	6.2	0.95x	5.5 to 6.3	2019-2023
Pancreas	Deaths	10.7	11.3	0.95x	10.2 to 11.3	2020-2024
Thyroid	New cases	12.3	13	0.95x	11.7 to 12.9	2019-2023
Leukemia	Deaths	5.3	5.7	0.93x	4.9 to 5.7	2020-2024
Kidney & renal pelvis	New cases	16.6	17.9	0.93x	16 to 17.3	2019-2023
Pancreas	New cases	12.6	13.9	0.91x	12 to 13.2	2019-2023
Non-Hodgkin lymphoma	Deaths	4.3	4.8	0.9x	4 to 4.7	2020-2024
All cancer	New cases	402.4	453.4	0.89x	399.1 to 405.8	2019-2023
Non-Hodgkin lymphoma	New cases	16.2	18.5	0.88x	15.5 to 16.9	2019-2023
Esophagus	New cases	3.9	4.6	0.85x	3.5 to 4.2	2019-2023
Leukemia	New cases	12.2	14.5	0.84x	11.7 to 12.9	2019-2023
Esophagus	Deaths	3.1	3.7	0.84x	2.8 to 3.4	2020-2024
Bladder	New cases	15.2	18.7	0.81x	14.6 to 15.9	2019-2023
Lung & bronchus	Deaths	23.8	30.2	0.79x	23 to 24.6	2020-2024
Lung & bronchus	New cases	35.5	51.8	0.69x	34.6 to 36.5	2019-2023

Mortality measures versus the U.S. county median

Source: County Health Rankings, built from CDC National Vital Statistics System death records. The comparison value is the median of all U.S. counties.

Mortality measures for Riverside County
Measure	County	U.S. median	Difference	Unit
Premature death	7,817.3	9,842.6	-21%	years of life lost before age 75 per 100,000
Life expectancy	77.8	75.3	+3%	years
Child mortality	41.3	59.8	-31%	deaths under age 18 per 100,000
Infant mortality	4.4	6.2	-29%	deaths under age 1 per 1,000 live births
Injury deaths	70.3	96.9	-28%	deaths per 100,000
Drug overdose deaths	32.3	28.6	+13%	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 30 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde21.54 per million
Carbon Tetrachloride2.81 per million
Acetaldehyde1.57 per million
Benzene1.44 per million

EPA Air Quality Index 2025

Monitored on 365 days: 39 good, 109 unhealthy for sensitive groups or worse. Median AQI 80, peak 365.

Regulated facilities, sites and hazards by type

8,117 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

NPDES wastewater discharge permit3,750
Small hazardous waste generator1,895
Gas station (mapped facility)483
Large hazardous waste generator442
Industrial wastewater discharge409
Hazardous waste transporter234
Rail grade crossing197
Auto repair or body shop (mapped facility)146
Brownfield property112
Toxic chemical release facility (TRI)65
TRI reporting facility48
Solar power plant47
Major air pollution source45
Air permit holder (minor source)32
Wastewater plant (mapped facility)31
Dry cleaner (mapped facility)29
Landfill (mapped facility)23
Wind power plant23
Heliport22
EPA air quality monitor15
Public airport12
Large greenhouse gas emitter12
Commercial airport10
Correctional facility (prison or jail)9
Gas power plant8
Hydroelectric plant6
Scrapyard (mapped facility)6
Superfund (NPL) site3
Biomass power plant2
Crematorium (mapped facility)1

Highest-severity records

The 25 records with the highest Envyrofax severity in the county, with the agency identifier to cite in a records request.

March Air Force Base, Riverside
Superfund (NPL) site. Hazard Ranking System score 31.9. NPL Site.
EPA site ID CA4570024527 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Alark Hard Chrome, Riverside
Superfund (NPL) site. Hazard Ranking System score 50.5. NPL Site.
EPA site ID CAD098229214 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Stringfellow, Glen Avon Heights
Superfund (NPL) site. NPL Site.
EPA site ID CAT080012826 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Mira Loma (Van Buren), Mira Loma
EPA air quality monitor.
Record ID 060658005 (U.S. EPA AirData)
Severity 9.1
Metal Container Corp-Mira Loma Can Plant, Jurupa Valley
Toxic chemical release facility (TRI). Chemicals: n-Butyl alcohol, Certain glycol ethers, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Lead. Reports carcinogens. 516,061 lbs released over 5 years.
TRI facility ID 91752MTLCN10980 (U.S. EPA Toxics Release Inventory)
Severity 8.9
Oldcastle Infrastructure Inc, Nuevo
Toxic chemical release facility (TRI). Chemicals: Styrene, Lead compounds, Dimethyl phthalate. Reports carcinogens. 82,587 lbs released over 5 years.
TRI facility ID 92567FRNKL1994H (U.S. EPA Toxics Release Inventory)
Severity 8.3
Rubidoux, Rubidoux
EPA air quality monitor.
Record ID 060658001 (U.S. EPA AirData)
Severity 8.3
Newbasis Llc, Riverside
Toxic chemical release facility (TRI). Chemicals: Styrene, Dimethyl phthalate. Reports carcinogens. 72,024 lbs released over 5 years.
TRI facility ID 92507SSCTD2626K (U.S. EPA Toxics Release Inventory)
Severity 8.2
Metal Container Corp, Mira Loma
TRI reporting facility.
EPA FRS registry ID 110000478082 (U.S. EPA ECHO) Agency record
Severity 8
Aoc L.L.C., Perris
Toxic chemical release facility (TRI). Chemicals: Styrene, Dicyclopentadiene, Phthalic anhydride, Maleic anhydride and 4 more. Reports carcinogens. 13,105 lbs released over 5 years.
TRI facility ID 92370LPHRS19991 (U.S. EPA Toxics Release Inventory)
Severity 7.7
Armtec Defense Technologies, Coachella
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), Ethylbenzene, n-Hexane. Reports carcinogens. 7,587 lbs released over 5 years.
TRI facility ID 92236RMTCD85901 (U.S. EPA Toxics Release Inventory)
Severity 7.5
Dura Coat Products Inc (Axalta Coating Systems), Riverside
Toxic chemical release facility (TRI). Chemicals: Certain glycol ethers, Zinc compounds, 1,2,4-Trimethylbenzene, Toluene and 4 more. Reports carcinogens. 7,066 lbs released over 5 years.
TRI facility ID 92509DRCTP5361V (U.S. EPA Toxics Release Inventory)
Severity 7.5
Imperial Western Products Inc, Coachella
Toxic chemical release facility (TRI). Chemicals: Ammonia, Methanol, Formic acid. 154,331 lbs released over 5 years.
TRI facility ID 9223WMPRLW866AB (U.S. EPA Toxics Release Inventory)
Severity 7
220 Laboratories, Inc., Riverside
TRI reporting facility.
EPA FRS registry ID 110002942451 (U.S. EPA ECHO) Agency record
Severity 6.8
Airgas Specialty Products - Riverside, Ca, Riverside
TRI reporting facility. Penalties $164,931.
EPA FRS registry ID 110038367317 (U.S. EPA ECHO) Agency record
Severity 6.8
Carpenter Co, Riverside
Toxic chemical release facility (TRI). Chemicals: Toluene diisocyanate (mixed isomers), Diisocyanates. Reports carcinogens. 530 lbs released over 5 years.
TRI facility ID 92504RCRPN7809L (U.S. EPA Toxics Release Inventory)
Severity 6.6
Us Dod Usaf March Air Reserve Base, Riverside
TRI reporting facility.
EPA FRS registry ID 110021307557 (U.S. EPA ECHO) Agency record
Severity 6.5
Corona Energy Partners, Corona
Major air pollution source.
EPA FRS registry ID 110000910462 (U.S. EPA ECHO) Agency record
Severity 6.5
Dart Container Corporation Of California, Corona
Major air pollution source.
EPA FRS registry ID 110017410960 (U.S. EPA ECHO) Agency record
Severity 6.5
Qg Printing Corporation, Riverside
Major air pollution source.
EPA FRS registry ID 110038091383 (U.S. EPA ECHO) Agency record
Severity 6.5
New Basis (Frmly Associated Plastics), Riverside
TRI reporting facility.
EPA FRS registry ID 110000479624 (U.S. EPA ECHO) Agency record
Severity 6.3
Western Riverside Co Reg Wwtp, Corona
NPDES wastewater discharge permit. Penalties $294,000.
EPA FRS registry ID 110055986811 (U.S. EPA ECHO) Agency record
Severity 6.3
Airgas Specialty Products-Riverside Ca, Riverside
Toxic chemical release facility (TRI). Chemicals: Ammonia. 10,170 lbs released over 5 years.
TRI facility ID 9250WRGSSP627WI (U.S. EPA Toxics Release Inventory)
Severity 6.1
Stremicks Heritage Foods Llc, Riverside
TRI reporting facility.
EPA FRS registry ID 110015582733 (U.S. EPA ECHO) Agency record
Severity 6.1
Imperial Western Products, Thermal
TRI reporting facility.
EPA FRS registry ID 110065251499 (U.S. EPA ECHO) Agency record
Severity 6

Correctional facilities

Prisons, jails and corrections operations with an EPA facility record, and the drinking water and wastewater compliance attached to them.

Chuckawalla Valley State Prison, Blythe
EPA FRS registry ID
110000527190
Water system
CA3310802
Health-based violations
3 all time, 0 in 5 years
All violations
11
Contaminants cited
Arsenic
Wastewater permit
Yes, 3 quarters in noncompliance
EPA detailed facility report
Robert Presley Detention Center, Riverside
EPA FRS registry ID
110002883318
Wastewater permit
None on record
EPA detailed facility report
Chuckawalla Valley/ Ironwood State Prison Wwtf, Blythe
EPA FRS registry ID
110064904233
Wastewater permit
Yes
EPA detailed facility report
County Of Riverside Rp Detention Center, Riverside
EPA FRS registry ID
110070415007
Wastewater permit
None on record
EPA detailed facility report
Cdcr - Ironwood State Prison, Blythe
EPA FRS registry ID
110070450374
Wastewater permit
None on record
EPA detailed facility report
Cdcr Norco Prison, Norco
EPA FRS registry ID
110071127437
Wastewater permit
None on record
EPA detailed facility report
East County Detention Center Site Construction, Indio
EPA FRS registry ID
x712c07e69273c9df99bc1577a445dc80
Wastewater permit
Yes
EPA detailed facility report
Solar Power Plant Ironwood And Chuckawalla State Prisons, Blythe
EPA FRS registry ID
x7bd02dd023afa84ad5d99dc2d2218dbf
Wastewater permit
Yes
EPA detailed facility report
Benoit Detention Center Offsite Improvement Project, Indio
EPA FRS registry ID
xa4e7ff1488a464911476d5925e14eabf
Wastewater permit
Yes
EPA detailed facility report

Discovery / public records

Records to request for Riverside County

California state cancer registry
Cancer incidence counts by census tract or ZIP code, by cancer type and year (de-identified). Any cancer cluster inquiries or investigations in Riverside County, and their findings.
California vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
California health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
California environmental agency and the U.S. EPA regional office
Compliance history, inspection reports, notices of violation, penalties and enforcement actions for each facility above, cited by EPA FRS registry ID.
California drinking water program
Violation notices, sampling results and sanitary surveys for the public water systems serving the county, including any system serving a correctional facility.
Department of corrections or county sheriff
Water testing, grievances and environmental health inspections for the correctional facilities listed above.

Each Envyrofax address report includes a printable records request worksheet with the custodian and the exact request wording per finding.

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